Rebuilding the Diesel Outline...

[dewintondave]

My next locomotive task is to rebuild my diesel outline steam locomotive. It now has pride of place on my workbench...



There are two issues that need sorting out:

I made a design boo-boo with the water gauge, it is tapped off the same boiler bush that feeds the regulator. This results in boiler water being pumped into the motor. It ran quite nicely, though the exhaust was rather wet, and the huge boiler was drained in around 5 minutes! So I quickly removed the water gauge. I now wish to re-instate it.

The displacement lubricator doesn't work on it's own, and requires an auxiliary steam feed (lower hand wheel on the lubricator).



Best wishes,
Dave.

[tom_tom_go]

I remember this Dave, love the noise it makes

[dewintondave]

I remember this Dave, love the noise it makes

Ah, yes arguably it's best feature

Best wishes,
Dave.

[Maple]

it looks very interesting, look forward to seeing its insides

[dewintondave]

Here's the original layout.



This shows where the lubricator was mounted. To give it a better chance of working without additional steam feed I needed to move the regulator away from the steam chest so that I can mount it after the regulator as usual.

In practice, the steam valve wasn't used, so I've removed it and made a banjo type coupling to the steam manifold. This gave me the required room to move the regulator out for the lubricator.



Lubricator project completed.



Next, the water gauge.

Best wishes,
Dave

[dewintondave]

Testing the boiler for leaks at the fittings, this was the fourth firing. Only one burner was lit.



New water gauge valve in the open position showing true water level. This will be closed when running the loco.


Testing the safety valve, the steam is being piped out of the way. Normally it's plumbed into one of the locos exhaust pipes. I had to change over the gas canister half way through the steam up.


Best wishes,
Dave

[dewintondave]

The lubricator still wouldn't work! I reduced the length of the threaded portion of the cap and bored out a big as possible a recess in it that I could. Now it feeds.



Bag of leftover bits no longer required


Beautiful, clear water level. I took the opportunity to paint the coupling rods red, correcting another anomaly.


During testing I forgot to close the water gauge valve, and boy did it pump water through the motor! Closing the valve promptly solved the issue.

This loco has slip eccentric reversing. Reversing used to be a struggle trying to turn the motor over backwards against residual steam before the eccentric started revolving. But all I have to do is open the drain cocks, simples!

Best wishes,
Dave.

[tom_tom_go]

Some great engineering going on here Dave.

Keep the posts coming...

[dewintondave]

A short video of me testing the loco on the bench.  I was adding some load to the motor by pressing my finger against a wheel.  This motor can turn over nice and slowly.

I've got kitchen towel under the exhaust pipes as an indicator to check that oil is coming through.

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Best wishes,
Dave

[Gralyn]

Great video. Stills tell a story but the video sees how it all works together.